experimental

adjective

ex·​per·​i·​men·​tal ik-ˌsper-ə-ˈmen-tᵊl 

 also  -ˌspir-

1

: of, relating to, or based on experience or experiment

2

a

: serving the ends of or used as a means of experimentation

an experimental school

b

: relating to or having the characteristics of experiment : tentative

still in the experimental stage

experimentally

ik-ˌsper-ə-ˈmen-tᵊl-ē 

 also  -ˌspir-

adverb

Synonyms

• developmental
• pilot
• trial

Examples of experimental in a Sentence

The fuel is being used on an experimental basis.

an experimental procedure for patients suffering from leukemia

Recent Examples on the Web

Having been reared in the experimental, freeform theater of Chicago’s Compass Players, May wanted to transfer that unpredictable energy to her film sets. —Marc Weingarten, Los Angeles Times, 29 May 2024

An experimental medical device called Arc-Ex, which stimulates a patient’s spinal nerves with electric pulses, appeared to incrementally improve arm and hand function in a small trial of patients with tetraplegia—a condition in which one is partially or totally paralyzed from the neck down. —Christian Thorsberg, Smithsonian Magazine, 28 May 2024

These include expanding its offering of Spanish-language text products, issuing an experimental version of the forecast cone graphic around August 15, and issuing regular and intermediate public advisories as needed instead of having to wait every six hours. —Hunter Geisel, CBS News, 23 May 2024

Never has an album this uncommercial blossomed into a structurally experimental musical and succeeded with Broadway crowds and critics, nabbing four 2024 Tony nominations, including best musical. —Joe Lynch, Billboard, 22 May 2024

Word History

Etymology

Middle English, borrowed from Medieval Latin experīmentālis, from Latin experīmentum "testing, experience, proof" + -ālis -al entry 1 — more at experiment entry 1

First Known Use

15th century, in the meaning defined at sense 1

Phrases Containing experimental

• pre-experimental

Kids Definition

experimental

adjective

ex·​per·​i·​men·​tal ik-ˌsper-ə-ˈment-ᵊl 

1

a

: of, relating to, or based on experience or experiment

experimental evidence

b

: subjected to the condition that is different from normal for a factor being tested in an experiment

the experimental group

2

: relating to or having the characteristics of experiment : tentative sense 1

still in the experimental stage

experimentally

-ᵊl-ē 

adverb

Medical Definition

experimental

adjective

ex·​per·​i·​men·​tal ik-ˌsper-ə-ˈment-ᵊl also -ˌspir- 

1

: of, relating to, or based on experience or experiment

2

: founded on or derived from experiment

the heart of the experimental method is the direct control of the thing studied

—B. F. Skinner

3

of a disease : intentionally produced especially in laboratory animals for the purpose of study

experimental diabetes

experimentally

-ᵊl-ē 

adverb